Briquet-mold.



No. 726,136. PATENTED APR, 21, 1903;

J. W. BRAMWELL.

BRIQUET MOLD.

APPLICATION FILED'IEB. 2, 1903. I

110 MODEL.

UNITED STATES,

PATE T OFFICE.

JOSEPH W. BRAMWELL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR-TO FALKENAU-SINCLAIR MACHINE COMPANY, OF PHILADELPHIA, PENN- SYLVANIA, A CORPORATION OF PENNSYLVANIA.

BRlQUET-MOLD.

SPECIFICATION forming part of Letters Patent No. 726,136, dated April 21, 1903.

Application filed February 2, 1903. Serial No..141,4=88. (No model.)

T0 on whom it may concern:

Be it known that I, JOSEPH W. BRAMWELL,

a subject of the King of Great Britain and Ireland, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Briquet-Molds, of which the following is a specification.

The object of my invention is to so construct a briquet-mold as to insure the accuracy and uniformity of the briquets formed therein. This object I attain in the manner hereinafter set forth, reference being bad to the accompanying drawings, in which- Figure l is a perspective view of a briquetmold constructed in accordance with my invention. Fig. 2 is a sectional'plan view of the same, and Fig. 3 is a transverse section on the line a a, Fig. 2.

The mold is composed, as usual, of two halves 1 and 2, so shaped as to impart the proper outline to the opening formed thereby for the reception of the plastic material of which the briquet is to be composed, each part of the mold having at one end a projecting ear 3 and at the other end a projecting ear 4,-

said ears 4 having pivoted thereto clampinglevers 5, which when adjusted so as to bear upon the ears 3 serve to confine the two portions of the mold firmly together.

When the mold is new, the faces of the parts 1 and 2 fit closely one to the other; but as the contact-surfaces of the clamping-levers 5 and ears 3 wear in course of time the halves of the mold are permitted to separate slightly when the plastic material is rammed into the opening, thus permitting a slight increase in the size of the briquet and correspondingly affecting the accuracy of the test to which the briquet is afterward subjected and which is based upon the supposition that the briquet is of. normal size.-

As the clamping-levers and mold-ears are usually madeof brassor other equally-soft metal, the clamping-surfaces wear rapidly, and the mold consequently preservesits standard character only for a relatively short time. In order to overcome this'objection, I insert into the bearing-face of the'ears 3 and clamping-levers 5 hardened steel bars or pins, those of the ears 3 being represented at 6 and'those of the clamping-levers at 7, contact of these bars or pins preventing rapid wear of the softmetal surfaces of the clamping-levers or of the ears engaged thereby, so that the mold retains its standard'condition for a much longer period than usual, if notindefinitely.

The bearing pins or barsof each clampinglever and its corresponding ear being at a right angle one to the other, the pin of the lever plays over that of the ear in the movement of said lever and always'finds a firm bearing upon it when the lever is tightened,

the pins 6 being slightly inclined in respect to the path of the pins 7, so that the two halves of the mold will be wedged tightly together by the contact of the pins,'the hardened surfaces of which preserve this desirable condisaid mold-ears and clamping-levers, substantially as specified.

2. A briquet-m'old. having projecting ears and clamping-levers with hardened wearing pins or bars inserted in the meeting faces of said mold-ears and clamping-levers, said hardened pins or bars of each lever and its corresponding car being at a right angle one to the other, substantially as specified.

3. A briquet-mold having projecting ears and clamping-levers with hardened wearing pins or bars inserted in the meeting faces of said mold-ears and clamping-levers, said bars of the mold-ears being inclined slightly in respect to the path of travel of the bars of theclamping-levers, substantially as specified.

In-testimony whereof I have signed my name to this specification in the two subscribing witnesses.

JOSEPH w. BRAMWELIJ.

presence of Witnesses:

MURRAY 0. BOYER, J os. H. KLEIN. 

